ARC Raiders Guide | How to Get Sentinel Firing Cores for Heavy Weapons

Here is a guide on How to Get Sentinel Firing Cores for Heavy Weapons in Arc Raiders.

Game Guide by Mash Rahman on Jul 29, 2026

Collecting Sentinel Firing Cores allows you to craft advanced armaments and upgrade workbenches in ARC Raiders. Destroying formidable machine defenses supplies your workshop with essential components needed to level up the Gunsmith station to Tier 3.

Targeting specific turret spawns and crashed containers across surface raids ensures a steady supply of these rare materials.

Destroying the Sentinels in ARC Raiders

Sentinel Turret Targets and Tactical Peeking

To get Sentinel Firing Cores for Heavy Weapons in ARC Raiders, you have to destroy Sentinels’ turrets that are attached to structures above and mounted to the ceiling. These machine turrets are sniper-type, locking onto players with yellow targeting lasers and firing deadly high-caliber shots.

Use heavy armor-piercing weapons like the Ferro while peeking from cover to destroy them before taking fatal damage.

Battlefields of Dam and Spaceport Patrol Courses

In ARC Raiders, you can find high-density spawn points for these sentinels across Dam Battlegrounds. Sentinels can be frequently encountered near the blue exterior staircase of the research building and the destroyed dam bridge. Spaceport is the Rocket Assembly and Control Tower A6.

This strategy increases your chances of finding active units in one deployment.

Crashed Courier Scavenging and Safe Extraction

Alternatively, you could try to find crashed ARC Couriers across open terrain (marked by rising plumes of black smoke) for farming. While courier drop rates remain below direct turret kills, these supply pods are a reliable source of cores without the need for heavy combat.

With Safe Pocket augments, you can keep the cores you’ve picked up if you get eliminated by other scavengers before you can reach an extraction elevator.